.img-fluid {
    max-width: 100%;
    height: auto;
}
.text-center {
    text-align: center;
}
.mt-3 {
    margin-top: 3rem;
}
.d-none {
    display: none;
}
.ml-2 {
    margin-left: 2rem;
}
.mr-3 {
    margin-right: 3rem;
}
.mt-d7 {
    margin: .7rem 0 .1rem 0;
}
.header-bar {
    margin-top: .3rem;
}
.header-bar .layui-form-item{
    margin-bottom: 0;
}
/*layui一些样式的调整*/
.layui-form-checkbox i{
    top:5px;
}
footer {
    position: fixed;
    bottom: 5px;
    left: 350px;
}